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Corpus Christi Watershed

Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

Dr. Charles Weaver • Article Archive

Dr. Charles Weaver is on the faculty of the Juilliard School, and serves as organist and director of music at St. Mary’s Church in Norwalk, Connecticut. His research interests include the history of music theory and the theory of plainchant rhythm. He lives in Connecticut with his wife and four children.—Read full biography (with photographs).

Dr. Charles Weaver · March 7, 2023

Beauty Ever Ancient, Ever New

Every Gregorian melody is a precious gift, and every time we meet a melody again, we have a chance to consider some new aspect.

Dr. Charles Weaver · February 27, 2023

An Interview on Mocquereau’s Method

I recently appeared on Square Notes, the Sacred Music Podcast to discuss some of the basics of Dom Mocquereau’s system of Gregorian rhythm. It’s impossible to give a full treatment to such a complex topic in a mere forty minutes, but I touched on a lot of the foundational ideas, with especial emphasis on the […]

Dr. Charles Weaver · January 26, 2023

What is the Tonic Accent?

We should define our terms. What makes a syllable accented, and what makes an accent a tonic accent?

Dr. Charles Weaver · December 8, 2022

Gregorian Rhythm Wars • “The Limits of History”

There’s nothing necessarily authentic about the “authentic” rhythm.

Dr. Charles Weaver · November 26, 2022

Gregorian Rhythm Wars • “On the Nuance Theory of Plainchant”

A brief historical survey of free rhythm in plainchant, as practiced from the modern monastic foundation of Solesmes (1833) to the present.

Dr. Charles Weaver · November 16, 2022

Gregorian Rhythm Wars • “Disputed Questions” (16 Nov 2022)

A few further thoughts on what ways of singing chant are “allowed.”

Dr. Charles Weaver · November 13, 2022

Gregorian Rhythm Wars • “Charlie’s First Response to Jeff” (13 Nov 2022)

Ostrowski, wishing to avoid fussiness, may justifiably refuse this invitation. But to argue, as he has, that these signs and the prayerful and aesthetic movements they embody are “illicit” is just wildly off the mark.

Dr. Charles Weaver · October 23, 2022

An Upcoming Concert in NYC

Announcing a concert next Saturday in honor of Christ the King.

Dr. Charles Weaver · October 9, 2022

The Solesmes Episema and Contemplation

Are we even singing the Solesmes rhythm at all?

Dr. Charles Weaver · September 29, 2022

Solmization from the Inside: Part 2

What can medieval and renaissance music pedagogy offer to us now?

Dr. Charles Weaver · September 12, 2022

Pre-Reformation Polyphony among the Recusants

What happened to all that polyphony once Catholicism became illegal?

Dr. Charles Weaver · August 26, 2022

PDF Download • Mocquereau on Trochee Trouble

This can seem like a dry topic, but it actually often deals with practical issues faced by every choirmaster who wants to promote plainchant.

Dr. Charles Weaver · July 23, 2022

Pothier Teaches Us to Sing an Antiphon

A look at Dom Pothier’s performance instructions for a communion antiphon reveals a great deal of complexity in this pre-Mocquereau interpretive approach.

Dr. Charles Weaver · May 26, 2022

Summer Courses in Sacred Music in New York

This summer, there are several interesting graduate-level courses on offer at St. Joseph’s Seminary in New York.

Dr. Charles Weaver · May 7, 2022

A Curious Rhythmic Detail in Tomorrow’s Jubilus

Occasionally the Solesmes rhythmic markings are surprising, as in one of tomorrow’s alleluias. Can we make sense of this?

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Corpus Christi Watershed

President’s Corner

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday—1 March 2026—the 2nd Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the flourishing feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    Particularly Beautiful
    The 2nd Sunday of Lent has magnificent propers. Its INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski

Quick Thoughts

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

“The scholar who lives only for his subject is but the fragment of a man; he lives in a shadow-world, mistaking means for ends.”

— Msgr. Ronald Knox (1888-1957)

Recent Posts

  • Music List • (2nd Sunday of Lent)
  • Particularly Beautiful
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  • Extreme Unction
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